[MonoTouch] Hanging when "Updating Xcode project"

[Mg]

Running MonoDevelop 2.8.4.1 and the latest Mono and MonoTouch and using
Xcode's interface builder.

I am working on a universal app and I just started working on the iPad xib
files in Xcode when this problem showed up. Everything has been fine with
iPhone xib's up to this point so I don't know if it was caused by the latest
version update or something else.

After returning from making changes to my xib in Xcode (nothing special,
just a few buttons and labels), MonoDevelop will become unresponsive for up
to a couple minutes while "Updating Xcode project". Eventually it will time
out with this message:

System.Exception: Error ScriptError: Xcode got an error: AppleEvent timed
out.
  at MonoDevelop.MacInterop.AppleScript.Run (Boolean compile,
MonoDevelop.MacInterop.AEDesc& scriptData) [0x00012] in
/private/tmp/source/monodevelop/main/src/addins/MacPlatform/MacInterop/AppleScript.cs:107 
  at MonoDevelop.MacInterop.AppleScript.Run (System.String scriptSource)
[0x00010] in
/private/tmp/source/monodevelop/main/src/addins/MacPlatform/MacInterop/AppleScript.cs:83 
  at MonoDevelop.MacInterop.AppleScript.Run (System.String
scriptSourceFormat, System.Object[] args) [0x00000] in
/private/tmp/source/monodevelop/main/src/addins/MacPlatform/MacInterop/AppleScript.cs:74 
  at MonoDevelop.MacDev.XcodeSyncing.XcodeMonitor.OpenProject () [0x00006]
in
/private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeMonitor.cs:343 
  at MonoDevelop.MacDev.XcodeSyncing.XcodeMonitor.UpdateProject
(IProgressMonitor monitor, System.Collections.Generic.List`1 allItems,
MonoDevelop.MacDev.XcodeIntegration.XcodeProject emptyProject) [0x0037b] in
/private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeMonitor.cs:146 
  at MonoDevelop.MacDev.XcodeSyncing.XcodeProjectTracker.UpdateXcodeProject
(IProgressMonitor monitor) [0x00000] in
/private/tmp/source/monodevelop/main/src/addins/MonoDevelop.MacDev/XcodeSyncing/XcodeProjectTracker.cs:315

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